Brickmaking machinery



` May '3, 1927.

A. O. DUPUY BRIGKMAKING MACHINERY Filed N0v. 8, 1923 Y IN V EN TOR.

Arhur O. D upuy K v 26% A gxss.

Patented May 3, 1927.

UNITED STATES- PAT ENT o FFicE.

ARTHUR o. DURUY, or' CLEVELAND, oHIo,.Ass1GNoR ToLANcAsTER IRoNWoRKs, f

ING., or LANCASTER, rENNsYLvAN1A,A coRPoRA'rioN or PENNSYLVANIA.

BRICKMAKING MACHINERY.

Appiication inea November e, i923. seriai No. 673,411. f

rough clay through a disintegrator wherein it is agitated to remove the larger of the stones found therein; and to then pass the clay through a pug-mill or mixer in which the material is further and more finely mixed. It has been found desirous in the manufacture of certain brick or tile to still further treat the clay, andk one Vcommon method therefor is to mount a pair of Crusher rolls adjacent the discharge end of the pug. mill between which the clay is crushed to a very fine consistency. `One great ldifficulty in such construction is caused by the small pebbles or stones contained in clay material which wedge between rolls and quickly groove them, it beingnecessary to frequently change and resurface them. rMy inveiition relates to a mechanism which is especially` adapted to continuously remove the stones or pebbles from between the crushing rolls, thus increasing the life of the rolls and greatly speeding up production.

`Another object of this invention is to provide, in connection with the mechanism for removing the stones, a pivoted spout through which the claymateral is delivered from the pug-mill.` Spouts of this nature are of less width than the rolls and direct the clay between the rolls and prevent it from overflowing the ends thereof. It has been necessary to provide a spout which will properly direct the 'clay to the rolls andr which is yieldable upon the'movementof my present stone remover in forcing a stonel past one side thereof f A still further object of the invention is to provideV suitablemounting means for the crushing rolls sothat the journals thereof will `be free from the movement of the continuous stone remover and allow the stones to be discharged beyond the ends of the rolls,

p i To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

`The annexed drawing and the following description set forth in detail certain mechatreating clay ma-k nism embodying the invention, such dis# closed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed *drawingszw Figure l is a side elevation ofV a horizontal type pugmill showing the several novel features of my invention as embodied there! in, several of the parts being broken away for the sake of clearness; Figure 2 is an'end velevation as seen from the left in Figure l; n igure Bis an enlarged `fragmentary sectionalV view of the discharge end of the pug' millushowing in` detail the pivoted` spout andl continuousv stone remover of this invention; vFigure el is a front elevationof the stoneremoving mechanism, and `Figure 5v is a view similar to Figure 3 butshowing a modified construction.

Pug-mills of the type illustrated in the drawing Vare Vvery well known and'v only a brief description Vthereof will be given as vis deemed necessary to bring out the co-operationbetween the operating elements of such `pug-mill and the operating parts of my invention. The pug-mill proper consists of a longitudinal semi-cylindrical body member lV supported .on suitable standards 2 and havino' a longitudinally extending shaft 3 suit"- ablly journaled in its ends 4 and'5. Upon the shaft 3 are mounted within the member l the usual mixing blades (not shown) which are adapted to agitate and `mix the clay material placed in the pug-mill. As is usual Y in such devices the blades are inclined to convey the clay from one end to the other of fthe pug-milland ,forceV it through a discharge opening 6 at the front end thereof.

may be employed to actuate the shaft 3. MountedV at the `front end of the pug-mill, closely adjacent the discharge opening there-V Suitable means, such as adriven shaft 8, f

in`,is a pair of transverse. aligned Crusher` rolls 10 and 11. A spout or'chute surround ing the opening 6 is attached to this end of the pug-mill to directthe clay forced therethrough between the rolls. It is customary to mount such rolls Vthat they'inay be adf justable with respect to one another as vari' ous conditions of the clayy may require. -Oii account of the movement of the continuous stoneremoving mechanism of this invention,

to be hereinafter more fully described, it has Y been necessary to devise a inountingfor the crushing rolls which will not interfere with the operation of such mechanism in discharging stones beyond the ends of the rolls. Rollv is carried on a shaft 12 which has its ends received in bearings 13 secured to `the rear face of thest-andards 2. Roll 11 is vrespect to each other consists of a. pair of rods 18- pivoted at one end in the brackets 13 and having their other ends passing through apertures 19 in the lower ends of arms 16. Beyond the arms 16 adjusting nuts 20 are provided on rods 18 and compression springs 21 are located between these nuts and the face of thearms 16 to keep the roll 1l pressed toward the roll 10 under compression. It will be obvious that as the clay is fed'from the pug-mill it will become intimately crushed between the rolls 10 and 11. Suitable means for driving said rolls may be provided independently of the operating mechanism for the pug-mill but for the sake of illustration I have shown the shaft'S provided with a pulley 25 which is belted to a pulley 26 mounted on the outer end of shaft 12. As seenv from Figure 2 the shafts 12 and 15 are inter-connected by gears 27 and 28 mounted on one end thereof. One advantage of driving the crusher rolls from the mechanism of the` pug-mill is that the,

relative 'speed of the various elements will always be constant.

great inexpediencies in passing the clay material `as extruded from a pug-mill between a pair of rolls is caused by the stones or pebbles which unavoidablyoccur in such material, it being practically impossible to remove such stones by the ordinary types of disintegrator's. Heretofore it has been found that the ystones beyond a certain size will not become crushed by the rolls but will ride between the rolls and ina very short time will cause grooves in the surface thereof,

and it will be apparent that upon the form` ing of such grooves the particular function of the rolls will be lost.- Consequently, much time and expense have been'consumed in changing these rolls and resurfacing` D b :D

them. One of the principal features of my inventionhasbeen to devise a novel mechanism which will continuously operate to remove such stones from between the lCrusher rolls which do not immediately pass therethrough. Such mechanism is herein shown in the form of a projecting finger 30 which is adapted to extend transversely of one of the rollsto a point close to the intersection of the V between the rolls 10 and 11. The finger 30 is carried at its upper end by a reciprocating framework 31 mounted to slide in suitable Vbearings 32 which are provided on the rear -to the lower end of an arm 38 mounted at one end of a longitudinally extending shaft 39, said shaft being mounted in suitable bearings et() on thev side of'the'pugdnill frame. Attached'to 'the forward end of such rod is an arm 41, similar to the'arm 39, which is connected by a link Z12 to a projecting lug or pin 43provided on the sliding member 31. It will be seen that upon rotation 4of the wheel 33 oscillatory movement will be imparted to the shaft 39 through the link 37 and arm and the framework 31 with its projecting finger' 13l will be caused to continuously traverse the surface of the rolls and remove any stone lodged therebetween.

In order that the clay coming from the pug-mill may be directed Vto a pointfclose to eaclrroll, it is necessary to ,provide a spout ory chute at the front end of the pugmill. I-Ieretofore these chutes have been fixed members, but due to the operation of the reciprocating `finger in this particular embodiment of 'my invention, I have `found .it necessary to devise a suitably pivoted j chute which will permit of the forcing of As has been previously stated, one of the stones beyond the side edges thereof and which will also feed the clay between the rolls without allowing it tov flow beyond the sides thereof.,l This spout comprises a pivoted member L15 attached at the forward end of the usual chute 46, which is open atits lower and forward ends, as indicated in Figure 3 for the discharge of the clay. Although the spout is found to normally aS- sume the correct position by gravity, it may be desirous to provide a weighted connection `thereuu'th to keep it pressed down toward the rolls.

In Figure I have illustrated a inecha.

nism which is Vparticularly adapted topprevent all stones beyond la certain size from passing between the rolls 10 and 11.. Such i mechanism consists of a fixed bar or rod 50 mounted close to the point of intersection .between the rolls so yas to provide a restricted space between the sides of said bar and each of the rolls. It will be seen that as the clay is fed from the pug-mill this, bar will keep all stones beyond a certain size from becoming wedged or crushed between the rolls. As 1n the rst described embodiment of this invention, I also provide a continuously operating mechanismf'or removing the stones which collect between lll) 4lll

Y opening,

the bar 50 and each of the rolls 10 and 11. A linger 51 similarly mounted upon a recprocating frame is adapted to move transversely of the rolls. The lower end of the linger 51 is suitably lbifurcated to provide projecting fingers 52 and 53 which operate on each side of the bar. Y

Other modes of applying the principle of myjinvention maybe employed instead of the one explained. change being made as regards the mechanism herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

I therefore particularly vpoint out and distinctly claim as my invention l. The combination with a pug-mill having a discharge opening at one end, of a pair ot' crusher rolls mounted adjacent said a pivotally mounted spout adapted to direct the material discharged from said opening to'said rolls and a reciprocatn ing linger adapted to travel between saidV rolls and said spout, saidfinger beingv adapted to force stones lodged -between said rolls to either side of said spout-and beyond the ends of the rolls.

2. The combination with a pair of parallel crusher rolls, of a bar mounted parallel with said rolls close to the point of their intersection, and reciprocating means adapted to continuously traverse the space ,be- Y tween said bar and each of said rolls.

3. The combination with a pair of crusher `rolls mounted in close parallelism, of a bar ARTHUR oQDUPUY. 

